Siphon



Oct. 21 1924.

w. c. BRINTON SIPHON Filed March 23 1922 R Y m M N R w m T. W! A top of a bottle ofniilk.

UNITED STATES 1 ,512,159 PATENT OFFICE.

' wInLAan c. imnrron, "or NEW YORK, N. Y.

'. SIPHON.

Application filed March 23, 1922. Serial No. 545,935.

the following is a specification.

My present invention relates to siphons of the automatic'or'self-starting type, and the objects of the invention are to provide a simple, practical and inexpensive device of this character, which will be definite and positive in its a,ction,'-andwhich will be particularly suited to the handling of more or less viscougliquids SllCh as cream and milk.

The special novel features of the inven tion'which make possible the attainment of the aboveobjects will be clear from the fol lowing specification which "is to be read in conjunction with the drawing accom-- panying and formin part of the same.

In the drawin re erred to Figure 1 is a vertical sectiona view illustrating. one of the practicalembodiments of the invention 1 as in use for removing the cream from the Figure 2.is a broken enlarged sectional view illustrating a method of securing the air compressing chamber on the end of the siphon tube.

Figure 3 is a fragmentary view indicating in a general way the functioning of the contracted throat.

Figure 4 is a broken sectional view of a sli htly modified form .ofthe invention.

11 this invention thesiphonic action is initiated by the air trapped within an air compressing chamber or hell 5' carried by and surroundin the intake leg of the siphon, such. cham er being in communication with the siphon by a restricted opening 6. The air thus trapped upon the lowering of the siphon into the liquid, passes up through the column of liquid in the tube, in the form of bubbles which carry with them, enough liquid to start the siphonic flow.

This action naturally varies to a certain extent in accordance with the viscosity of the liquid, the operation being delayed, or in some instances, less certain, with the heavier and more viscous liquids.

To overcome'this possible fault or uncertainty, I provide in the discharge leg'of the siphon a restriction or contraction which will have atendency to concentrate the unitary-mass or globule which will completely fill up the tube and hence form a liquid piston which, subjected to the action of gravity at the discharge side of the siphon, Wlll then act in the nature of a piston, in its fall down. the relatively long discharge side of the siphon, to create the suction necessary to positively start the siphonic flow. I

In the first form of the invention disclosed this reduction is accomplished by swaging tube, this reduced diameter continuing clearto the discharge mouth'of the tube so that the liquid'plug Will have no chance for expansion and will therefore operate as a close-fitting piston during its entire descent. While I have described only the action of this first formed. plug or piston, it will be realized that others may' form behind this first piston, before the solid flow of liquid commences.

In some instances, for example, for handling certain liquids it may be desirable to keep the full or substantially the full diameter in the discharge side of the tube and to have the contraction only at the one point in the tube, for instance, as I have liquid-carried over by the bubbles into a .the discharge side of the tube to a lesser denting-a groove in the exterior of the tube so as to produce an internal contraction. With this construction the operation will be substantially the same as described, except that the action will be more like that of an injector or aspirator, rather than a simple piston.

As a further means of making the action more definite and certain I'may expand the intake end of the siphon tube into a funnel or bell-mouth such as indicated at 9. This operates as a collector, as the siphon is lowered in the liquid, causing the column of liquid to rise with considerable force and possess a degree of momentum or kinetic energy at the time it is acted upon by the bubbles, which therefore operate the more effectively.

The air compressing chamber may be secured upon the tube in various ways, for

Sleeve portion 11 of the bell or cup over these ribs, which preferably are of less length than the sleeve, as indicated in Figure 2, so as to leave an amount of solid or uncut material 12 at the lower end of the sleeve. The upper end of the sleeve, which has been cut to a certain extent in the forcing of the sleeve over'the tube may be swaged inward into close-fitting engagement with the tube and over the upper ends of the ribs, asindicated at 13. This method of fastening,

it will be seen, locks the bell against longitudinal movement in either direction and also secures the. bell against rotative movement on the tube. ened in this way, the funnel, on the end of the tube may be formed after the bell has been secured in place.

It will be seen from the foregoing that myinvention provides a simple and practical means for adapting the siphon to the hanpeak in the bend of the tube and at the discharge side of said peak.

2. The structure of claim 1 in which'the discharge side of the tube is of the same re duced internal diameter from the contraction therein to the end of the tube.

3. A self-starting siphon having an air When the parts are fasttrapping chamber connected with the intake side thereof and having an outlet leg restricted' in internal diameter substantially restricted portion of the outlet leg being less than the diameter of any portion of the 1ntake leg. i

4:. A self-starting. siphon consisting of athroughout its length, the diameter of the cylindrical tube havingthe major portion of its outlet le of less diameter than the inlet leg thereo and means associated with the inlet leg and operable b the insertion of the inlet leg in, the'l'iquid for initiating the flow of liquid. v

5."A self-starting siphon consisting. of a cylindrical tube having the major portion of its outletlegof less diameter than any portion of the inlet leg thereof and means in cluding an open ended bell associated with the inlet end for initiating the flow of liquid.

6. A tube having a concentric air; trapping on the intake end thereof with a restricted opening from said bell the tube, said tube having a contracted throat in the discharge side thereof ata point relatively close to they bend or arch .in the tube.

7 A s'iphon'tu-be having substantially lonself Starting siphon comprisingma gitudinal ribs formed thereon and an air trapping bell havin a sleeve portion 'surrounding the rib part of the tube and having the opposite ends of the same closed over the opposite ends said.

In witness whereof, I have hereuntoset my hand this 22d day of March, 1922.

WILLARD o. BRINT'ON.

of the. ribs afore- 

